78090908

素因数分解:

$2^2\times 7^2\times {\mathrm{398423}}^1$

素因数の和:398441

約数の個数: 18

約数和(自身を含む): 158971176

約数和(自身を除く): 80880268

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 398423, 796846, 1593692, 2788961, 5577922, 11155844, 19522727, 39045454, 78090908]

約数ペア:

[(1, 78090908), (2, 39045454), (4, 19522727), (7, 11155844), (14, 5577922), (28, 2788961), (49, 1593692), (98, 796846), (196, 398423)]